Machining Tips & Techniques

There’s an art (and science) behind machining with precision and accuracy. 

With countless variables to consider, the complexities of modern machining are growing more sophisticated as newly emerging production processes and technologies enter the fold. 

To help streamline your machining efforts, we’ve compiled the latest machining tips and tricks. 

In this article, we’ll cover: 

• Common machining techniques
• Machining tricks and tips
• Getting started with a leading precision machining company

Machining Techniques

Precision machining consists of a vast array of technologies and techniques used to remove materials from a raw substance to create the desired workpiece. 

Depending on the desired outcome of a workpiece, different machining techniques may be used. 

Some of the most commonly used machining techniques are:

• Milling – A machining process that uses rotary cutters to remove debris by advancing a cutter into a workpiece 
• Turning – A machining process used to make cylindrical parts that move linearly while the workpiece rotates 
• Grinding – An abrasive machining process that uses grinders or grinding wheels to finish workpieces that require high surface quality or dimension transparency 
• EDM – Electronic discharge machining (or spark machining) is a metal fabrication process whereby desired shapes are obtained by using electrical discharges
• Drilling – A machining process that creates a round hole within a workpiece by rotating an end-cutting tool
• Cutting – A machining technique where an operator moves a workpiece in relation to the cutting tool to shape workpieces into desired results through shaving, drilling, etc.

CNC Machining Tips

Computer Numerical Control (CNC) machining is a manufacturing process where pre-programmed computer software dictates the movement of factory tools and machinery.

When compared to conventional machining, CNC machining requires less oversight, leans on process automation through software and does not require contact with raw materials. 

To maximize the efficiency of CNC machining processes, check out these simple CNC machining tips and tricks:

• Invest in high-quality cutters to produce better quality parts for the long-term
• Ensure the to-be engraved surface is flat (unless you’re engraving a 3D surface)
• Micro-drop misting setups for coolants prevent chip buildup and are less messy than siphon-based misting systems
• Purchase a feeds and speeds calculator to improve accuracy
• Learn to use Manual Data Input (MDI) to save time and become more efficient

Specialty industries, like aerospace and oil and energy, rely on CNC machining to manufacture high-quality parts from unique and sometimes hard-to-work-with raw materials. When conventionally machined, there is lower material efficiency and increase deformation frequency than CNC machining. 

A couple of common machining tips and tricks aerospace manufacturers use are:

• Using multi-tasking machines to reduce setups and inaccuracies while improving productivity
• Deploying advanced CNC programming functions to streamline consistency and compliance requirements

 

 

Machining Plastic Tips

Machining plastics can be challenging as there are many variables to consider. 

When plastic CNC machining, manufacturers can better avoid elastic deformation and overheating by following these three machining plastic tips:

• Minimize the chip effect by keeping the cutting tool oscillating continuously while coolants remove chips and reduce temperatures
• Avoid clamping a plastic workpiece with too much pressure to prevent breaks or marks
• Use cutting tools made primarily of high-speed steel, diamond or cemented carbide

 

Metal Machining Tips

For two really great medical CNC machining tips (the kind that major manufacturers use to maintain quality and uniformity), check these out:

• If you happen to be doing precision machining with some of the more challenging medical-grade metals (like titanium or cobalt chrome), two techniques you could use are:

• • Trochoidal milling (a machining method wherein you create a slot that’s wider than the cutting tool’s diameter by using a series of circular cuts)
  • Maintain very sharp PVD-coated tools (the advantage of which is ensuring you make smooth cuts and zero mistakes in the base material)

 

 

Stainless Steel Machining Tips

Some stainless steel alloys are prone to harden during machining which can cause overheating and increased work hardening. 

To avoid these complications, follow these two tips:

• Ensure tool overhang is minimum and that tooling and workpieces are secure
• Start with lower feed rates (since stainless steel quality can vary between suppliers and batches) as high feed rates can cause heat transfer into the cutting tool, accelerating tool wear

Titanium Machining Tips

Tips for machining titanium include pre-drilling threading to reduce torque levels and tool strain, increasing flute quantity for increased productivity, and keeping a low radial engagement rate to maximize heat dissipation. 

Inconel Machining Tips

Inconel metal is exceptionally tough making them valuable as high-intensity applications but also incredibly difficult to work with. 

Often requiring extreme temperatures, Inconel machining can be simplified through these three tips: 

• Make sure to regularly check toolings for signs of wear as the surface hardness of Inconel can blunt even the strongest tools
• Start with a solutionized piece of Inconel to limit the amount of work hardening and reduce wear and tear
• Use ceramic cutting tools to make continuous cuts and minimize work hardening

Go A Step Above Machining Tips with Moseys

Machining tricks and tips will only get you so far in the world of manufacturing. 

To maximize your machining efforts, consider using an experienced precision machining partner. 

At Moseys, we bring more than 46 years of experience to our clients, offering industry specialty machining from aerospace, defense, electronics, medical devices and more.  

With comprehensive full-service production machining, Moseys has your back every step of the way through virtually managed inventory services and transparent manufacturing processes.

To learn how Moseys can improve your machining, reach out to one of our specialists today.